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前几天作者发现了一个新版本的Python安装文件，这个版本号是3.8的，可能一般的训练师都不知道这个版本的新功能有哪些，现在本人就告诉你们

(这个版本支持的位数不仅支持喵位，也支持32位。)

 

Editor: Raymond Hettinger

This article explains the new features in Python 3.8, compared to 3.7. For full details, see the changelog.

Python 3.8 was released on October 14th, 2019.

Summary – Release highlights New Features Assignment expressions

There is new syntax := that assigns values to variables as part of a larger expression. It is affectionately known as “the walrus operator” due to its resemblance to the eyes and tusks of a walrus.

In this example, the assignment expression helps avoid calling len() twice:

if (n := len(a)) > 10:
    print(f"List is too long ({n} elements, expected <= 10)")

A similar benefit arises during regular expression matching where match objects are needed twice, once to test whether a match occurred and another to extract a subgroup:

discount = 0.0
if (mo := re.search(r'(\d+)% discount', advertisement)):
    discount = float(mo.group(1)) / 100.0

The operator is also useful with while-loops that compute a value to test loop termination and then need that same value again in the body of the loop:

# Loop over fixed length blocks
while (block := f.read(256)) != '':
    process(block)

......

还有很多，请在Python的帮助文档中揭晓。

想安装和体验?请看链接。

链接：https://pan.喵/s/1fgRusyxstynqQk6uFV121A?pwd=5edu
提取码：5edu